diff --git a/pkgs/development/python-modules/swh-export/default.nix b/pkgs/development/python-modules/swh-export/default.nix
index 0190098afa1c..a9f1dadd28b3 100644
--- a/pkgs/development/python-modules/swh-export/default.nix
+++ b/pkgs/development/python-modules/swh-export/default.nix
@@ -71,6 +71,9 @@ buildPythonPackage (finalAttrs: {
     pkgs.pv
   ];
 
+  # Kafka tests use librdkafka's mock broker bound to the loopback interface.
+  __darwinAllowLocalNetworking = true;
+
   disabledTests = [
     # I don't know how to fix the following error
     # E       fixture 'kafka_server' not found